TrkExAlgs → TrkDetDescr Relation

File in Tracking/TrkExtrapolation/TrkExAlgs/TrkExAlgs	Includes file in Tracking/TrkDetDescr
EnergyLossExtrapolationValidation.h	TrkSurfaces / TrkSurfaces / CylinderSurface.h
EnergyLossExtrapolationValidation.h	TrkSurfaces / TrkSurfaces / DiscSurface.h